Method of constructing bulkheads in ships, barges, pontoons, and the like.



. L. E. SMITH & H. R. CAMERON.

METHOD OF CONSTRUCTING BULKHEADS IN SHIPS, BARGES, PONTOONS AND THE LIKE;

APPLICATION FILED AUG.6. I918.

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bNiTED STATES PATENT OFFICE.

LAUNCELOT EUSTACE SMITH. AND HUGH ROBERT CAMERON, OF SOUTH SHIELDS, ENG-LAND.

METHOD OF CONSTRUQTING BULKHEADS IN SHIPS, BARGES, PONTOONS, AND THE LIKE.

Application filed August 6, 1918. Serial No..248,616.

To all whom it may concern.-

Be it known that we, LAUNCELOT EUSTACE SMITH and HUGH ROBERT CAMERON, both of South Shields, in the county of Durham, England, and both subjects of the King of Great Britain, have invented a new and useful Improvement in the Methods of Con structing Bulkheads in Ships, Barges, Pontoons, and the like, of which the following is a specification.

This invention relates to the construction of bulkheads in ships, barges, pontoons, and the like, and more especially to bulkheads of a kind heretofore proposed wherein a series of curved trough shaped plates are secured together by riveting in such a manner that the plates present their concave portions to the one side and their convex portions to the other side of the bulkhead.

According to this invention, the plates of which the bulkhead is constructed are made in the form of a semi-circle in cross-section and are riveted together along their edges.

By this construction, the vertical and horizontal stiffeners heretofore necessary can be reduced in number or dispensed with and a larger amount of machine riveting can be carried out than has been possible heretofore.

In the accompanying drawing- Figure 1, is an elevation and Fig. 2 a plan 7 showing a bulkhead constructed according to the said invention, with the semi-circular plates arranged vertically.

Figs. 3, 4E and 5 are respectively an elevation, a plan, and a section on the line X X Fig. 3, illustrating a modification.

A, A are steel plates rolled to a semicircular cross-section and arranged together side by side to form a bulkhead, so that their concave surfaces are on one side of the bulkhead and the convex surfaces are on the other side of the bulkhead. As shown in Fig. 2, the semi-circular plates are secured together by rows of rivets B, B extending along their sides near the edges, the ends of the plates being secured by shoe angles C, C riveted to the plates A, A and to the shell and deck plates D, E.

In the center of the bulkhead, e. .9. midships or at other positions where it is desired to connect longitudinal bulkheads eopiev of thin patent may be obtained for five cents each, by addressing the Commissioner of Washington, D. G.

Specification of Letters Patent.

thereto, shaped section plates F may be riveted to the edges of the semi-circular section plates A, so as to form a pillar of circular section, to which the edges of the plates A, A forming the longitudinal bulkheads are riveted.

.In the construction shown in Figs. 3, 4 and 5, in addition to the shoe angles C, the plates A, A are supported at their ends by means of brackets G, G, of which the brackets G are riveted to the crests of the semicircular plates A and the brackets G to the edges of such plates in the joints be tween the adjacent plates.

What we claim. as our invention and desire to secure by Letters Patent is 1. A bulkhead constructed of plates which are of semi-circular form in cross-section and are riveted together along their edges with their concave portions on one side of the bulkhead and their convex portions on the other side.

2. A bulkhead constructed of plates which are of semicircular form in cross-section and are riveted together along their edges with their concave portions on one side of the bulkhead and their convex portions on the other side, in combination with shoe angles connecting the ends of said circular plates with the main structure of the ship.

3. A bulkhead constructed of plates which are of semicircular form in cross-section and are riveted together along their edges with their concave portions on one side of the bulkhead and their convex portions on the other side, in combination with brackets connecting the ends of said circular plates .with the main structure of the ship.

4. A bulkhead constructed of plates which are of semicircular form in cross-section and are riveted together along their edges with their concave portions on one side of the bulkhead and their convex portions on the other side, in combination with shoe angles and brackets connecting the ends of said circular plates with the main structure of the ship."

LAUNCELOT EUSTACE SMITH. HUGH ROBERT CAMERON. "Witnesses:

A. HUTOHINSON, E. NIXON.

Patents, 

